Early Viscosupplementation After ACL Reconstruction: a Randomized Controlled Trial (HA-ACL)

September 12, 2017 updated by: Federica Balboni, Istituto Ortopedico Rizzoli

Early Post-op. Viscosupplementation After Primary Anterior Cruciate Ligament (ACL) Reconstruction: a Randomized, Placebo Controlled Trial

The possibility of using an intra-articular agent such as hyaluronic acid (HA) to reduce the post-operative inflammatory stress on the knee joint, limiting the use of other pain-killers and promoting a faster recovery after ACL reconstruction, seems attractive.

The aim of the present double blind, placebo controlled study is to evaluate the effects, both in terms of pain control and functional recovery, provided by a single HA injection performed in the early postoperative phase after ACL reconstruction.

The day after the ACL reconstruction (which is performed with the same technique for all the patients enrolled), the patients were randomized to receive a single injection of HA or 3 ml of saline solution. The randomization list was kept in a dedicated office and the injecting physician contacted it to know the treatment allocation just before the injection, that was performed by a lateral parapatellar approach, after removing the drainages and after attempting aspiration to evacuate any eventual residual blood from the joint. In order to maintain the patient blind to the treatment, a surgical drape was placed to prevent him to see the injective procedure.

All patients will be evaluated at 15, 30, 60, 180 and 360 days after surgery by using the following tools: SF-36, IKDC subjective, VAS for pain, EQ-VAS for general Health Status and Tegner score. Also the trans-patellar circumference and active and passive ROM of both knees were registered at each follow-up evaluation.

Study Overview

Detailed Description

Viscosupplementation is an injective approach used in the orthopaedic practice to manage chondropathy and osteoarthritis (OA) in different joints. In the last decades, several products have been developed by biomedical industries, with different biochemical and physical properties, with the aim of providing the best and long-lasting beneficial effects in OA patients. The rational supporting the use of viscosupplementation is due both to its biomechanical and biological actions. First of all, hyaluronic acid (HA) exerts a lubricant effect improving the rheological properties of synovial fluid thus reducing the mechanical stresses within the joint that are responsible for the activation of nociceptors and further cartilage surface wear. Furthermore, HA binds to cellular receptors and further stimulates endogenous production of hyaluronan, other extracellular matrix components, and it also counteracts inflammatory molecules and proteases that are overexpressed in a diseased joint . In light of these features, HA could be considered an "intra-articular drug" which can act both as a pain killer and joint regulator agent. These properties could be theoretically exploited also for different clinical applications than a chronic disease like OA. In particular, viscosupplementation might play a beneficial role in restoring the overall joint homeostasis and might contribute to reduce pro-inflammatory stimuli after knee surgical procedures, thus reducing pain and accelerating functional recovery. Anterior cruciate ligament (ACL) reconstruction is one of the most common procedures in the field of sports medicine . It is common for patients to experience persistent knee swelling after the surgical procedure, and this increases pain and delays the start of the rehabilitation program, thus prolonging the times of full functional recovery. The possibility of using an intra-articular agent such as HA to reduce the post-operative inflammatory stress on the knee, limiting the use of other pain-killers and promoting a faster recovery after ACL reconstruction, seems therefore attractive.

The aim of the present double blind, placebo controlled randomized study is to evaluate the effects, both in terms of pain control and functional recovery, provided by a single HA injection performed in the early postoperative phase after ACL reconstruction.

The day after the ACL reconstruction (which is performed with the same technique for all the subjects enrolled), the patients were randomized to receive a single injection of HA or 3 ml of saline solution. The randomization list was kept in a dedicated office and the injecting physician contacted this office to know the treatment allocation just before the injection, that was performed by a lateral parapatellar approach, after removing the drainages and after attempting aspiration to evacuate any eventual residual blood from the joint. In order to maintain the patient blind to the treatment, a surgical drape was placed to prevent him to see the injective procedure.

All patients will be evaluated at 15, 30, 60, 180 and 360 days after surgery by using the following tools: SF-36, IKDC subjective, VAS for pain, EQ-VAS for general Health Status and Tegner score. Also the trans-patellar circumference and active and passive ROM of both knees were registered at each follow-up evaluation.

Study Type

Interventional

Enrollment (Actual)

60

Phase

  • Phase 4

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

    • Emilia Romagna
      • Bologna, Emilia Romagna, Italy, 40136
        • II Orthopaedic Clinic, Rizzoli Orthopaedic Institute

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 50 years (ADULT)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • chronic and symptomatic ACL tear requiring primary surgical reconstruction;
  • age between 18 and 50 years;

Exclusion Criteria:

  • concurrent articular lesion requiring surgical treatment (just isolated partial meniscectomy was permitted)
  • axial mal-alignment in the index limb
  • unhealthy contra-lateral knee (i.e. functional limitation or pain)
  • concurrent rheumatic or metabolic disease
  • alterations in the other joints of the index limb (e.g.: hip or ankle disease)
  • previous ACL reconstruction in the index knee

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: TREATMENT
  • Allocation: RANDOMIZED
  • Interventional Model: PARALLEL
  • Masking: DOUBLE

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
EXPERIMENTAL: Hyaluronic acid group
Single injection of 3 ml HA (product name: Hymovis, Fidia Spa, Padova, Italy) the day after ACL reconstruction (after drainage removal)
A single 3 ml hyaluronic acid (HA) injection (viscosupplementation) performed the day after ACL reconstruction, after drainage removal
PLACEBO_COMPARATOR: Placebo group
Single injection of 3 ml saline solution the day after ACL reconstruction (after drainage removal)
A single 3 ml saline injection performed the day after ACL reconstruction, after drainage removal

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Change in IKDC (International Knee Documentation Committee) Subjective score
Time Frame: basal, 6 and 12 months post-op
basal, 6 and 12 months post-op

Secondary Outcome Measures

Outcome Measure
Time Frame
Adverse events report
Time Frame: 15 days
15 days
Adverse events report
Time Frame: 30 days
30 days
Adverse events report
Time Frame: 60 days
60 days
Change in Tegner Score
Time Frame: basal, 6 and 12 months
basal, 6 and 12 months
Transpatellar circumference trend
Time Frame: basal, 15, 30, 60, 180 days post op
basal, 15, 30, 60, 180 days post op
Trend in Active and Passive Range of Motion (ROM) of the knee
Time Frame: basal, 15, 30, 60, 180 days post op
basal, 15, 30, 60, 180 days post op
Change in VAS (Visual Analogue Scale) for general health status
Time Frame: basal, 15, 30, 60, 180 days post op
basal, 15, 30, 60, 180 days post op
Change in VAS for pain
Time Frame: basal, 15, 30, 60, 180 days post op
basal, 15, 30, 60, 180 days post op
Change in SF-36 (Short Form Health Survey) Score
Time Frame: basal, 6 and 12 months post-op
basal, 6 and 12 months post-op
Adverse events report
Time Frame: 180 days
180 days

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Investigators

  • Principal Investigator: Elizaveta Kon, MD, II Clinic & Nano-biotechnology Lab, Rizzoli Orthopaedic Institute, Bologna, Italy

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

December 1, 2012

Primary Completion (ACTUAL)

March 1, 2016

Study Completion (ACTUAL)

March 1, 2016

Study Registration Dates

First Submitted

November 30, 2015

First Submitted That Met QC Criteria

December 10, 2015

First Posted (ESTIMATE)

December 15, 2015

Study Record Updates

Last Update Posted (ACTUAL)

September 13, 2017

Last Update Submitted That Met QC Criteria

September 12, 2017

Last Verified

September 1, 2017

More Information

Terms related to this study

Other Study ID Numbers

  • Rizzoli HA-ACL

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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